package thread;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class ThreadPoolDemo {
    public static void main(String[] args) {
        //创建线程池
        //创建固定大小的线程池,容量为2(内部有两条线程)
        ExecutorService pool = Executors.newFixedThreadPool(2);
        for (int i = 0; i < 8; i++) {
            Runnable r = new Runnable() {
                public void run() {
                    Thread t = Thread.currentThread();
                    System.out.println(t.getName()+":正在执行任务...");
                    try {
                        Thread.sleep(5000);

                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println(t.getName()+":执行任务完毕!");
                }
            };
            pool.execute(r);
            System.out.println("指派一个任务给线程池.");
        }
       // pool.shutdown();
        pool.shutdownNow();
        System.out.println("线程池停止了!");
    }
}
